法式排水
排水管材料
ft
ft
ft
公式
Gravel = L × W × D / 27
French drains use perforated pipe surrounded by gravel and filter fabric.
示例
50ft × 1ft × 2ft
~3.7 cu yd gravel.
常见问题
关于 法式排水
Estimate materials for French drain installation.
排水管材料
French drains use perforated pipe surrounded by gravel and filter fabric.
~3.7 cu yd gravel.
Estimate materials for French drain installation.